CVE-2016-8369 in JENEsys BAS Bridge
Summary
by MITRE
An issue was discovered in Lynxspring JENEsys BAS Bridge versions 1.1.8 and older. The application does not sufficiently verify if a request was intentionally provided by the user who submitted the request (CROSS-SITE REQUEST FORGERY).
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Analysis
by VulDB Data Team • 08/14/2020
The vulnerability identified as CVE-2016-8369 affects Lynxspring JENEsys BAS Bridge versions 1.1.8 and earlier, representing a critical cross-site request forgery flaw that undermines the application's authentication and authorization mechanisms. This weakness stems from insufficient validation of request origins, allowing malicious actors to exploit the system's trust in user-provided requests without proper verification of intent or identity. The vulnerability exists within the web application's core request handling logic where the system fails to implement adequate anti-CSRF measures to distinguish between legitimate user-initiated requests and those crafted by attackers.
The technical implementation flaw manifests in the application's failure to validate request authenticity through proper CSRF tokens or origin checking mechanisms. This allows an attacker to craft malicious requests that appear to originate from authenticated users, exploiting the trust relationship between the user session and the application's processing logic. The vulnerability is categorized under CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications. The flaw enables attackers to perform unauthorized actions within the context of authenticated sessions, potentially leading to privilege escalation, data manipulation, or unauthorized system modifications.
Operationally, this vulnerability poses significant risks to industrial control systems and building automation environments where JENEsys BAS Bridge serves as a critical interface. Attackers could exploit the CSRF vulnerability to execute arbitrary commands, modify system configurations, or access sensitive operational data without proper authorization. The impact extends beyond simple data theft, as the affected system likely controls critical infrastructure components including HVAC systems, lighting controls, or security systems. This vulnerability aligns with ATT&CK technique T1566.002, which describes credential harvesting through social engineering and web-based attacks targeting authentication mechanisms.
Mitigation strategies should focus on implementing robust CSRF protection measures including the deployment of unique, unpredictable tokens for each user session, proper validation of referer headers, and implementation of SameSite cookie attributes. Organizations should also consider implementing additional security controls such as multi-factor authentication, network segmentation, and regular security assessments of industrial control systems. The vulnerability highlights the importance of applying security best practices to industrial environments where traditional web application security measures may be insufficient. System administrators should immediately upgrade to patched versions of the JENEsys BAS Bridge software and conduct thorough security reviews of all web-based industrial control interfaces to prevent exploitation of similar vulnerabilities.